Friction-mucver for lathbs and grinders



G. B. AMUNDSEN. FRICTION DRIVER FOR LATHES AND GRINDERS.

APPLICATIQN FILED MAY 26, I919.

Patnted Apr. 13, 1920.

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UNITED STATES rA'rEN'r omen comrim! a. numeric, or o'nmnoo, armors,assmaoa T om one up rotmnar oon m, or new roan, n}: lobngoan'rron or newmeans.

mOTImT-DBIVEB rqa'n srnns an, oarmmas.

To all who? it may concern.

' Be it known that I, Germany B. Ammosmv, residing at Chicago, county orCook,

State of Illinois, and being a citizen of the .United States, haveinvented certain new and. useful Improvements in Friction- 7 Drivers forLathes and Grinders, of which the following is a full, clear, and exactdee scri tion,.such as will enable others skilled in t e art to which itappertains to make and to use the same, reference being had to thewconipanying drawings, which illm-s grinders and it is the ohjectof intrate the preferred form of the invention,

vention is not limited to the exact details. of

Specifications! Letters Patent ...Pa'1;ented Apr. 13, 1 920.- unmanfiled any is, 1 19. sum No. 297,714. a

though it is to be understood'that the in-.

construction shown and described, as. it isobvious that variousmodifications" thereof within the scotfie of the claims will occur topersons skille in the art.

In said drawings: Figure 1 is a central longitudinal section of mydevice; and o Fig. 2 is an end elevation. This invention relates todrivers ing, and driving the work onlathes and invention to provide adevice that may he tted to the headstock of the machine and that ma beuickly enga ed with ordisengaged rom t e work an that will properlydrive the w k. s p} %t is to be understood that the:inwention isinotli'inited to' the exact detail s of eon-xstruetion shown and described,as it is oh vious that various modifications thereof within thesco eoffthe claimswill occur is persons skille in the art.

Referring to the drawings, 1 designates a spindle rovid'ed with a shank2 for engafiment wi h the machine head spindle-8. e spindle 1 isprovided with a oentral'longitudinal bore 4, enlarged'at one end so asto receive the usualtapered center 5. provided with slots 6 in its outersurface and with an annular recess in which is fitted a collar 7 thatissecured in plaoe by pins 8 and which the slots 8.

Fittin loosel onthe spindle 1 is a sleeve 9, the in ernal iameter ofwhich is slightly greater than the diameter of the s in la so as topermi of a slight play of t e sleeve on the spin le. The outer end ofthe sleeve is enlarged and provided .with an outwardly serves to closethe outer ends of to-frictionally' to provide fo'r the removal of dirtand gr" that. would interiere with the proper seatm on. the center fiendthe spffiinfi while servin 'as a 'means keep t e lotion 'efthe work proand wear: The friotional ieng'aement of ri-n extendin flange 10. Securedbetween the.55 inner en of the sleeve 9 anda flange 11 on the spindle 1,is a spiral spring 12 which encircles the spindle 1 and serves to forcethe sleeve '9' outwardly." ,Screwsli? in openings in the sleeve 9 andtravelin in the slmfi 6 of the spindle 1, eng'a e the co lar 7 whiccloses theends of the s ots Band limit the outward movernent of thesleevet. i

Engaging the inside ofthe flan 10 and the outer end of the sleeve 9 andfii ivemby tion rin 14, the inner surface of the rin havingt 1e sh e ofa frustum of a eonewit the lesser di ter adjacent the'eiiter end of thesleeve. -This enables a ring to care for work-o1 31' any differentdiameflils' ihfl drive the work, t e workbe-' ing' positioned asindicated in ottedflines" in Fig. 1. 'Bin of different internaldiameters'lrnaybe more to fit the one sleeve,'mak-' ing a change 'o'fthefriction ring'all that is necessary in order that the driver may aeforhold commodate work of any diameter within the ca acity ,0f-the sleeve.ssmail holes 15 are drilled'throngh the outer end of the sleei' #6 ofthe ring 14 and "periii'it of the insertion of a, punch to aid in theremoval of the nractice, the play of the sleeve on'the.

spind e permits the work which engages the 1 frictionv ring toautoiiiatically center itsel have become shot-tone; ouig work, permitregmndi .14 and sleeve 9 andnfring litand the-wor "permits'of the ring14 turnin in 'the sleeve It is also 9 or of the work turning in 1 1 in-case too heavy a cut istaken or 't e work is can t by the tool and thus'actsto protect hot the work and the tool. The panner of the spring onthe outside of thes inais leaves it open for constant insgection "dkeeps it from becoming filled wit dirt w the driver is used on grindingmachines.

What I claim is: o i 1.' The combination of a spindle, .a sleeve carriedby said spindle, a work-engagin' and driving ring carried by said.sleeve an yielding means for forcing said ring into engagement with thework.

2. The combination of a spindle, a sleeve carried by said spindle, awork-(mgaging and driving ring carried. by said sleeve and a springengaging said spindle and said sleeve for forcing said .ring intodriving en gagenient with the work.

The combination of a spindle, a sleeve engaging said spindle, meanscarried by sa d sleeve for driving the work, and means carried by saidspindle for forcing said workdriving means into engagement with thework.

4. The combination of a spindle, a sleeve engagingsaid spindle, meanscarried by said sleeve for driving the work and yielding .In'ans forforcing said work-driving means ingo driving engagement with the work.

a. The combination of a spindle, a sleeve engaging said spindle andfrictional work driving means riotionally driven by said sleeve.

.6. The combination of a spindle, a sleeve engaging said spindle,frictional work-driving means frictionally driven by said sleeve andmeans for forcing the work-driving means into engagementwith the Work.

,7. The combination of a spindle, a sleeve engaging said spindle,work-engagingmeans frlctionally driven said sleeve andyieldfl in'g meansfor forcing said work-engaging means into engagement wlth the work.

8.' The combination of a spindle, a sleeveaging said spindle, frictionalwork-thin Q means frictionally driven by said sleeve and yielding meansfor forcing said workengaging means into engagement with the work. Y 9.The combination of a spindle, a sleeve carried by said spindle and aWork engaging ring earried by said sleeve and adapted to travel in saidsleeve when subjected to undue stress.

.10. The combination of a spindle a sleeve iegiried by said spindle and.a WOIlK engag- 11g ring carried. by said sleeve and adapted to permitthe work to travel therein when subjected to undue stress.

11. The eombination of a spindle, a sleeve carried by said spindle and awork drivn ring carried by said sleeve and having 1 driving engagementwith said sleeve nilnplw'l lo yield under undue stress.

12, The combination of a spindle, a slew rnrri'ed by said spindle and awork driving ring ('m'ried by said sleeve having' a drii ing engagementwith the work adapted to yield under undue stress.

13. The combination of a spindle, a sleeve carried by said spindle and awork driving ring carried by said sleeve, the conneetions between saidring and said s eeve and work being adapted to yield under in duestress.

14. The mniliinntion ol' :1 spindle, a slew r un ind by said spindle, ai'lnslinl \vuiLI no gaging ring carried by said sleeve and adapted tofrirlionally drinthe work.

15. The ronaliinafion of a spindle, n (losel sleeve carried by saidspindle, and a "l sed work engaging ring fitted in said sleeve andhaving a tapering work-engaging Opening and adapted to frietionallydrive the WOl'h'.

16. The combination of a spindle, a closed sleeve carried by saidspindle, a closed W()ll( engaging ring fitted to said sleeve and adaptedto frictionally drive said work and resilient means adapted to forcesaid ring into engagen'ient with the work.

17,. The eornbinationof a spindle, a closed sleevdeari'md 'b saidspindle, a closed work ngagin ring iaving a tapering Work engagingopening fitted to said sleeve and ada ted to friotionally drive the Workand resi ient means engaging said spindle and sleeve and adapted toforce said ring into (511- ga ement with the Work.

n Witness whereof I have hereunto set my hand in the )resenee of twowitnesses. GOD REY B. AMUNDSEN. Witnesses:

A. T. Hoonss, J. B. Bosn an.

